package HLLib.json;

/*
 Copyright (c) 2002 JSON.org

 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is
 furnished to do so, subject to the following conditions:

 The above copyright notice and this permission notice shall be included in all
 copies or substantial portions of the Software.

 The Software shall be used for Good, not Evil.

 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
 */

import java.util.Vector;

import HLCode.HLClass;
import HLCode.HLClassManager;
import HLCode.HLClassManager_H;
import HLCode.HLLibObject;
import HLLib.base.HLDateTime;
import HLLib.base.HLString;

/**
 * A JSONArray is an ordered sequence of values. Its external text form is a
 * string wrapped in square brackets with commas separating the values. The
 * internal form is an object having <code>get</code> and <code>opt</code>
 * methods for accessing the values by index, and <code>put</code> methods for
 * adding or replacing values. The values can be any of these types:
 * <code>Boolean</code>, <code>JSONArray</code>, <code>JSONObject</code>,
 * <code>Number</code>, <code>String</code>, or the
 * <code>JSONObject.NULL object</code>.
 * <p>
 * The constructor can convert a JSON text into a Java object. The
 * <code>toString</code> method converts to JSON text.
 * <p>
 * A <code>get</code> method returns a value if one can be found, and throws an
 * exception if one cannot be found. An <code>opt</code> method returns a
 * default value instead of throwing an exception, and so is useful for
 * obtaining optional values.
 * <p>
 * The generic <code>get()</code> and <code>opt()</code> methods return an
 * object which you can cast or query for type. There are also typed
 * <code>get</code> and <code>opt</code> methods that do type checking and type
 * coersion for you.
 * <p>
 * The texts produced by the <code>toString</code> methods strictly conform to
 * JSON syntax rules. The constructors are more forgiving in the texts they will
 * accept:
 * <ul>
 * <li>An extra <code>,</code>&nbsp;<small>(comma)</small> may appear just
 * before the closing bracket.</li>
 * <li>The <code>null</code> value will be inserted when there is <code>,</code>
 * &nbsp;<small>(comma)</small> elision.</li>
 * <li>Strings may be quoted with <code>'</code>&nbsp;<small>(single
 * quote)</small>.</li>
 * <li>Strings do not need to be quoted at all if they do not begin with a quote
 * or single quote, and if they do not contain leading or trailing spaces, and
 * if they do not contain any of these characters:
 * <code>{ } [ ] / \ : , = ; #</code> and if they do not look like numbers and
 * if they are not the reserved words <code>true</code>, <code>false</code>, or
 * <code>null</code>.</li>
 * <li>Values can be separated by <code>;</code> <small>(semicolon)</small> as
 * well as by <code>,</code> <small>(comma)</small>.</li>
 * <li>Numbers may have the <code>0-</code> <small>(octal)</small> or
 * <code>0x-</code> <small>(hex)</small> prefix.</li>
 * <li>Comments written in the slashshlash, slashstar, and hash conventions will
 * be ignored.</li>
 * </ul>
 * 
 * @author JSON.org
 * @version 2
 */
public class HLJSONArray extends HLLibObject {
    public HLClass GetClass(HLClassManager classManager) {
        return classManager.GetLibClass(HLClassManager_H.CLASS_GROUP_TYPE_LIB_JSON, HLClassManager_H.LIB_CLASS_JSON_JSONArray);
    }

    /**
     * The Vector where the JSONArray's properties are kept.
     */
    public Vector myArrayList;

    /**
     * Construct an empty JSONArray.
     */
    public HLJSONArray() {
        this.myArrayList = new Vector();
    }
    public void Init(HLString string){
        HLJSONTokener tokener =  new HLJSONTokener(string.string);
        InitWithTokner(tokener);
    }

    void InitWithTokner(HLJSONTokener x){
        if (x.nextClean() != '[') {
            // throw x.syntaxError("A JSONArray text must start with '['");
        }
        if (x.nextClean() == ']') {
            return;
        }
        x.back();
        this.myArrayList.removeAllElements();
        for (;;) {
            if (x.nextClean() == ',') {
                x.back();
                this.myArrayList.addElement(null);
            } else {
                x.back();
                this.myArrayList.addElement(x.nextValue());
            }
            switch (x.nextClean()) {
            case ';':
            case ',':
                if (x.nextClean() == ']') {
                    return;
                }
                x.back();
                break;
            case ']':
                return;
            default:
                // throw x.syntaxError("Expected a ',' or ']'");
            }
        }
    }
    /**
     * Construct a JSONArray from a JSONTokener.
     * 
     * @param x
     *            A JSONTokener @ If there is a syntax error.
     */
    HLJSONArray(HLJSONTokener x) {
        this();
       InitWithTokner(x);
    }

    /**
     * Construct a JSONArray from a source sJSON text.
     * 
     * @param string
     *            A string that begins with <code>[</code>&nbsp;<small>(left
     *            bracket)</small> and ends with <code>]</code>
     *            &nbsp;<small>(right bracket)</small>. @ If there is a syntax
     *            error.
     */
    public HLJSONArray(String string) {
        this(new HLJSONTokener(string));
    }

    /**
     * Construct a JSONArray from a Collection.
     * 
     * @param collection
     *            A Collection.
     */
    public HLJSONArray(Vector collection) {
        if (collection == null) {
            this.myArrayList = new Vector();
        } else {
            int size = collection.size();
            this.myArrayList = new Vector(size);
            for (int i = 0; i < size; i++) {
                this.myArrayList.addElement(collection.elementAt(i));
            }
        }
    }

    /**
     * Get the object value associated with an index.
     * 
     * @param index
     *            The index must be between 0 and length() - 1.
     * @return An object value. @ If there is no value for the index.
     */
    public Object get(int index) {// {
        Object o = opt(index);
        if (o == null) {
            // throw new JSONException("JSONArray[" + index + "] not found.");
        }
        return o;
    }

    /**
     * Get the boolean value associated with an index. The string values "true"
     * and "false" are converted to boolean.
     * 
     * @param index
     *            The index must be between 0 and length() - 1.
     * @return The truth. @ If there is no value for the index or if the value
     *         is not convertable to boolean.
     */

    // if CLDC!="1.0"
    // /**
    // * Get the double value associated with an index.
    // *
    // * @param index The index must be between 0 and length() - 1.
    // * @return The value.
    // * @throws JSONException If the key is not found or if the value cannot
    // * be converted to a number.
    // */
    public double getDouble(int index) {
        Object o = get(index);
        try {
            return Double.valueOf((String) o).doubleValue();
        } catch (Exception e) {
            return 0;
        }
    }

    // endif

    // if CLDC!="1.0"
    // /**
    // * Get the int value associated with an index.
    // *
    // * @param index The index must be between 0 and length() - 1.
    // * @return The value.
    // * @throws JSONException If the key is not found or if the value cannot
    // * be converted to a number.
    // * if the value cannot be converted to a number.
    // */

    // endif

    /**
     * Get the JSONArray associated with an index.
     * 
     * @param index
     *            The index must be between 0 and length() - 1.
     * @return A JSONArray value. @ If there is no value for the index. or if
     *         the value is not a JSONArray
     */

    /**
     * Get the JSONObject associated with an index.
     * 
     * @param index
     *            subscript
     * @return A JSONObject value. @ If there is no value for the index or if
     *         the value is not a JSONObject
     */

    public long getLong(int index) {
        Object o = get(index);
        return (long) getDouble(index);
    }

    // endif

    /**
     * Get the string associated with an index.
     * 
     * @param index
     *            The index must be between 0 and length() - 1.
     * @return A string value. @ If there is no value for the index.
     */
    public String getString1(int index) {// {
        return get(index).toString();
    }

    /**
     * Determine if the value is null.
     * 
     * @param index
     *            The index must be between 0 and length() - 1.
     * @return true if the value at the index is null, or if there is no value.
     */
    public boolean isNull(int index) {
        return HLJSONObject.NULL_OBJECT.equals(opt(index));
    }

    /**
     * Make a string from the contents of this JSONArray. The
     * <code>separator</code> string is inserted between each element. Warning:
     * This method assumes that the data structure is acyclical.
     * 
     * @param separator
     *            A string that will be inserted between the elements.
     * @return a string. @ If the array contains an invalid number.
     */
    String join(String separator) {
        int len = length();
        StringBuffer sb = new StringBuffer();

        for (int i = 0; i < len; i += 1) {
            if (i > 0) {
                sb.append(separator);
            }
            sb.append(HLJSONObject.valueToString(this.myArrayList.elementAt(i)));
        }
        return sb.toString();
    }

    /**
     * Get the number of elements in the JSONArray, included nulls.
     * 
     * @return The length (or size).
     */
    public int length() {
        return this.myArrayList.size();
    }

    /**
     * Get the optional object value associated with an index.
     * 
     * @param index
     *            The index must be between 0 and length() - 1.
     * @return An object value, or null if there is no object at that index.
     */
    Object opt(int index) {
        return (index < 0 || index >= length()) ? null : this.myArrayList.elementAt(index);
    }

    /**
     * Get the optional boolean value associated with an index. It returns false
     * if there is no value at that index, or if the value is not Boolean.TRUE
     * or the String "true".
     * 
     * @param index
     *            The index must be between 0 and length() - 1.
     * @return The truth.
     */
    boolean optBoolean(int index) {
        return optBoolean(index, false);
    }

    /**
     * Get the optional boolean value associated with an index. It returns the
     * defaultValue if there is no value at that index or if it is not a Boolean
     * or the String "true" or "false" (case insensitive).
     * 
     * @param index
     *            The index must be between 0 and length() - 1.
     * @param defaultValue
     *            A boolean default.
     * @return The truth.
     */
    boolean optBoolean(int index, boolean defaultValue) {
        try {
            return getBoolean(index);
        } catch (Exception e) {
            return defaultValue;
        }
    }

    // if CLDC!="1.0"
    // /**
    // * Get the optional double value associated with an index.
    // * NaN is returned if there is no value for the index,
    // * or if the value is not a number and cannot be converted to a number.
    // *
    // * @param index The index must be between 0 and length() - 1.
    // * @return The value.
    // */
    // public double optDouble(int index) {
    // return optDouble(index, Double.NaN);
    // }
    // endif

    // if CLDC!="1.0"
    // /**
    // * Get the optional double value associated with an index.
    // * The defaultValue is returned if there is no value for the index,
    // * or if the value is not a number and cannot be converted to a number.
    // *
    // * @param index subscript
    // * @param defaultValue The default value.
    // * @return The value.
    // */
    public double optDouble(int index, double defaultValue) {
        try {
            return getDouble(index);
        } catch (Exception e) {
            return defaultValue;
        }
    }

    // }
    // endif

    // if CLDC!="1.0"
    // /**
    // * Get the optional int value associated with an index.
    // * Zero is returned if there is no value for the index,
    // * or if the value is not a number and cannot be converted to a number.
    // *
    // * @param index The index must be between 0 and length() - 1.
    // * @return The value.
    // */
    public int optInt(int index) {
        return getInt(index);
    }

    /**
     * Get the optional JSONArray associated with an index.
     * 
     * @param index
     *            subscript
     * @return A JSONArray value, or null if the index has no value, or if the
     *         value is not a JSONArray.
     */
    HLJSONArray optJSONArray(int index) {
        Object o = opt(index);
        return o instanceof HLJSONArray ? (HLJSONArray) o : null;
    }

    /**
     * Get the optional JSONObject associated with an index. Null is returned if
     * the key is not found, or null if the index has no value, or if the value
     * is not a JSONObject.
     * 
     * @param index
     *            The index must be between 0 and length() - 1.
     * @return A JSONObject value.
     */
    HLJSONObject optJSONObject(int index) {
        Object o = opt(index);
        if (o == null | o.equals(null)) {
            return null;
        }
        return o instanceof HLJSONObject ? (HLJSONObject) o : null;
    }

    public long optLong(int index) {
        return optLong(index, 0);
    }

    // if CLDC!="1.0"
    // /**
    // * Get the optional long value associated with an index.
    // * The defaultValue is returned if there is no value for the index,
    // * or if the value is not a number and cannot be converted to a number.
    // * @param index The index must be between 0 and length() - 1.
    // * @param defaultValue The default value.
    // * @return The value.
    // */
    public long optLong(int index, long defaultValue) {
        try {
            return getLong(index);
        } catch (Exception e) {
            return defaultValue;
        }
    }

    // endif

    /**
     * Get the optional string value associated with an index. It returns an
     * empty string if there is no value at that index. If the value is not a
     * string and is not null, then it is coverted to a string.
     * 
     * @param index
     *            The index must be between 0 and length() - 1.
     * @return A String value.
     */
    String optString(int index) {
        return optString(index, "");
    }

    /**
     * Get the optional string associated with an index. The defaultValue is
     * returned if the key is not found.
     * 
     * @param index
     *            The index must be between 0 and length() - 1.
     * @param defaultValue
     *            The default value.
     * @return A String value.
     */
    String optString(int index, String defaultValue) {
        Object o = opt(index);
        return o != null ? o.toString() : defaultValue;
    }

    /**
     * Append a boolean value. This increases the array's length by one.
     * 
     * @param value
     *            A boolean value.
     * @return this.
     */
    public HLJSONArray putBool(boolean value) {
        // if CLDC!="1.0"
        // put(value ? Boolean.TRUE : Boolean.FALSE);
        // else
        put(value ? HLJSONObject.TRUE_OBJECT : HLJSONObject.FALSE_OBJECT);
        // endif
        return this;
    }

    /**
     * Put a value in the JSONArray, where the value will be a JSONArray which
     * is produced from a Collection.
     * 
     * @param value
     *            A Collection value.
     * @return this.
     */
    HLJSONArray putVector(Vector value) {
        put(new HLJSONArray(value));
        return this;
    }

    // if CLDC!="1.0"
    // /**
    // * Append a double value. This increases the array's length by one.
    // *
    // * @param value A double value.
    // * @ if the value is not finite.
    // * @return this.
    // */
    // public JSONArray put(double value) {
    // Double d = new Double(value);
    // JSONObject.testValidity(d);
    // put(d);
    // return this;
    // }
    // endif

    /**
     * Append an int value. This increases the array's length by one.
     * 
     * @param value
     *            An int value.
     * @return this.
     */

    /**
     * Append an long value. This increases the array's length by one.
     * 
     * @param value
     *            A long value.
     * @return this.
     */
    HLJSONArray putLong(long value) {
        put(new Long(value));
        return this;
    }

    // ifdef PRODUCER
    // /**
    // * Put a value in the JSONArray, where the value will be a
    // * JSONObject which is produced from a Map.
    // * @param value A Map value.
    // * @return this.
    // */
    // public JSONArray put(Hashtable value) {
    // put(new JSONObject(value));
    // return this;
    // }
    // endif

    /**
     * Append an object value. This increases the array's length by one.
     * 
     * @param value
     *            An object value. The value should be a Boolean, Double,
     *            Integer, JSONArray, JSONObject, Long, or String, or the
     *            JSONObject.NULL object.
     * @return this.
     */
    public HLJSONArray put(Object value) {
        this.myArrayList.addElement(value);
        return this;
    }

    /**
     * Put or replace a boolean value in the JSONArray. If the index is greater
     * than the length of the JSONArray, then null elements will be added as
     * necessary to pad it out.
     * 
     * @param index
     *            The subscript.
     * @param value
     *            A boolean value.
     * @return this. @ If the index is negative.
     */
    HLJSONArray putBoolAt(int index, boolean value) {
        // if CLDC!="1.0"
        // put(index, value ? Boolean.TRUE : Boolean.FALSE);
        // else
        putAt(index, value ? HLJSONObject.TRUE_OBJECT : HLJSONObject.FALSE_OBJECT);
        // endif
        return this;
    }

    /**
     * Put a value in the JSONArray, where the value will be a JSONArray which
     * is produced from a Collection.
     * 
     * @param index
     *            The subscript.
     * @param value
     *            A Collection value.
     * @return this. @ If the index is negative or if the value is not finite.
     */
    HLJSONArray putVectorAt(int index, Vector value) {
        putAt(index, new HLJSONArray(value));
        return this;
    }

    // if CLDC!="1.0"
    // /**
    // * Put or replace a double value. If the index is greater than the
    // length of
    // * the JSONArray, then null elements will be added as necessary to pad
    // * it out.
    // * @param index The subscript.
    // * @param value A double value.
    // * @return this.
    // * @ If the index is negative or if the value is
    // * not finite.
    // */
    // public JSONArray put(int index, double value) {
    // put(index, new Double(value));
    // return this;
    // }
    // endif

    /**
     * Put or replace an int value. If the index is greater than the length of
     * the JSONArray, then null elements will be added as necessary to pad it
     * out.
     * 
     * @param index
     *            The subscript.
     * @param value
     *            An int value.
     * @return this. @ If the index is negative.
     */
    HLJSONArray putIntAt(int index, int value) {
        putAt(index, new Integer(value));
        return this;
    }

    /**
     * Put or replace a long value. If the index is greater than the length of
     * the JSONArray, then null elements will be added as necessary to pad it
     * out.
     * 
     * @param index
     *            The subscript.
     * @param value
     *            A long value.
     * @return this. @ If the index is negative.
     */
    HLJSONArray putLongAt(int index, long value) {
        putAt(index, new Long(value));
        return this;
    }

    // ifdef PRODUCER
    // /**
    // * Put a value in the JSONArray, where the value will be a
    // * JSONObject which is produced from a Map.
    // * @param index The subscript.
    // * @param value The Map value.
    // * @return this.
    // * @ If the index is negative or if the the value is
    // * an invalid number.
    // */
    // public JSONArray put(int index, Hashtable value) {
    // put(index, new JSONObject(value));
    // return this;
    // }
    // endif

    /**
     * Put or replace an object value in the JSONArray. If the index is greater
     * than the length of the JSONArray, then null elements will be added as
     * necessary to pad it out.
     * 
     * @param index
     *            The subscript.
     * @param value
     *            The value to put into the array. The value should be a
     *            Boolean, Double, Integer, JSONArray, JSONObject, Long, or
     *            String, or the JSONObject.NULL object.
     * @return this. @ If the index is negative or if the the value is an
     *         invalid number.
     */
    HLJSONArray putAt(int index, Object value) {
        if (index < 0) {
        }
        if (index < length()) {
            this.myArrayList.setElementAt(value, index);
        } else {
            while (index != length()) {
                put(HLJSONObject.NULL_OBJECT);
            }
            put(value);
        }
        return this;
    }

    /**
     * Produce a JSONObject by combining a JSONArray of names with the values of
     * this JSONArray.
     * 
     * @param names
     *            A JSONArray containing a list of key strings. These will be
     *            paired with the values.
     * @return A JSONObject, or null if there are no names or if this JSONArray
     *         has no values. @ If any of the names are null.
     */
    HLJSONObject toJSONObject(HLJSONArray names) {
        if (names == null || names.length() == 0 || length() == 0) {
            return null;
        }
        HLJSONObject jo = new HLJSONObject();
        for (int i = 0; i < names.length(); i += 1) {
            jo.putValue(names.getString1(i), this.opt(i));
        }
        return jo;
    }

    /**
     * Make a JSON text of this JSONArray. For compactness, no unnecessary
     * whitespace is added. If it is not possible to produce a syntactically
     * correct JSON text then null will be returned instead. This could occur if
     * the array contains an invalid number.
     * <p>
     * Warning: This method assumes that the data structure is acyclical.
     * 
     * @return a printable, displayable, transmittable representation of the
     *         array.
     */
    public String toString() {
        try {
            return '[' + join(",") + ']';
        } catch (Exception e) {
            return null;
        }
    }

    /**
     * Make a prettyprinted JSON text of this JSONArray. Warning: This method
     * assumes that the data structure is acyclical.
     * 
     * @param indentFactor
     *            The number of spaces to add to each level of indentation.
     * @return a printable, displayable, transmittable representation of the
     *         object, beginning with <code>[</code>&nbsp;<small>(left
     *         bracket)</small> and ending with <code>]</code>
     *         &nbsp;<small>(right bracket)</small>. @
     */
    String toString(int indentFactor) {
        return toString(indentFactor, 0);
    }

    /**
     * Make a prettyprinted JSON text of this JSONArray. Warning: This method
     * assumes that the data structure is acyclical.
     * 
     * @param indentFactor
     *            The number of spaces to add to each level of indentation.
     * @param indent
     *            The indention of the top level.
     * @return a printable, displayable, transmittable representation of the
     *         array. @
     */
    String toString(int indentFactor, int indent) {
        int len = length();
        if (len == 0) {
            return "[]";
        }
        int i;
        StringBuffer sb = new StringBuffer("[");
        if (len == 1) {
            sb.append(HLJSONObject.valueToString(this.myArrayList.elementAt(0), indentFactor, indent));
        } else {
            int newindent = indent + indentFactor;
            sb.append('\n');
            for (i = 0; i < len; i += 1) {
                if (i > 0) {
                    sb.append(",\n");
                }
                for (int j = 0; j < newindent; j += 1) {
                    sb.append(' ');
                }
                sb.append(HLJSONObject.valueToString(this.myArrayList.elementAt(i), indentFactor, newindent));
            }
            sb.append('\n');
            for (i = 0; i < indent; i += 1) {
                sb.append(' ');
            }
        }
        sb.append(']');
        return sb.toString();
    }

    // put
    public void putInt(int value) {
        put(new Integer(value));
    }

    public void putString(HLString value) {
        put(value.string);
    }

    public void putJSONObject(HLJSONObject value) {
        put(value);
    }

    public void putJSONArray(HLJSONArray value) {
        put(value);
    }

    public void putBoolean(boolean value) {
        put(new Boolean(value));
    }

    public void putDateTime(HLDateTime value) {
        put(value);
    }

    // putAtIndex
    public void putIntAtIndex(int index, int value) {
        putAt(index, new Integer(value));
    }

    public void putStringAtIndex(int index, HLString value) {
        putAt(index, value.string);
    }

    public void putJSONObjecAtIndext(int index, HLJSONObject value) {
        putAt(index, value);
    }

    public void putJSONArrayAtIndex(int index, HLJSONArray value) {
        putAt(index, value);
    }

    public void putBooleanAtIndex(int index, boolean value) {
        putAt(index, new Boolean(value));
    }

    public void putDateTimeAtIndex(int index, HLDateTime value) {
        putAt(index, value);
    }

    // get
    public int getInt(int index) {
        Object o = get(index);
        int intValue = 0;
        if(o instanceof Double ){
            return (int) (((Double)o).doubleValue() * 100);
          }
        else if(o instanceof Float ){
            return (int) (((Float)o).floatValue() * 100);
         }else if(o instanceof String) {
             intValue =  Integer.valueOf(o.toString()).intValue();
         }
        else  {
            intValue =  ((Integer) o).intValue();
        }
        
        return intValue;
    }

    public boolean getBoolean(int index) {
        Object o = get(index);
        // if CLDC!="1.0"
        // if (o.equals(Boolean.FALSE) ||
        // else
        if (o.equals(HLJSONObject.FALSE_OBJECT) ||
        // endif
                (o instanceof String && ((String) o).toLowerCase().equals("false"))) {
            return false;
            // if CLDC!="1.0"
            // } else if (o.equals(Boolean.TRUE) ||
            // else
        } else if (o.equals(HLJSONObject.TRUE_OBJECT) ||
        // endif
                (o instanceof String && ((String) o).toLowerCase().equals("true"))) {
            return true;
        }
        return false;
    }

    public HLString getString(int index) {// {
        return new HLString(getString1(index));
    }

    public HLJSONArray getJSONArray(int index) {
        Object o = get(index);
        if (o instanceof HLJSONArray) {
            return (HLJSONArray) o;
        }
        return null;
    }

    public HLJSONObject getJSONObject(int index) {// {
        Object o = get(index);
        if (o instanceof HLJSONObject) {
            return (HLJSONObject) o;
        }
        return null;
    }

    public HLDateTime getDateTime(int index) {
        Object o = get(index);
        if (o instanceof HLDateTime) {
            return (HLDateTime) o;
        }
        return null;
    }
    //
    public HLString toHLString(){
        return new HLString(toString());
    }

}
